Noninvasive imaging of three-dimensional cardiac activation sequence during pacing and ventricular tachycardia.

ABSTRACT:

Background

Imaging cardiac excitation within ventricular myocardium is important in the treatment of cardiac arrhythmias and might help improve our understanding of arrhythmia mechanisms.

Objective

This study sought to rigorously assess the imaging performance of a 3-dimensional (3D) cardiac electrical imaging (3DCEI) technique with the aid of 3D intracardiac mapping from up to 216 intramural sites during paced rhythm and norepinephrine (NE)-induced ventricular tachycardia (VT) in the rabbit heart.

Methods

Body surface potentials and intramural bipolar electrical recordings were simultaneously measured in a closed-chest condition in 13 healthy rabbits. Single-site pacing and dual-site pacing were performed from ventricular walls and septum. VTs and premature ventricul

SUBMITTER: Han C 

PROVIDER: S-EPMC3151469 | biostudies-literature | 2011 Aug

REPOSITORIES: biostudies-literature